Why are Blades hitting on 3 blade mower?

Blades hitting on a 3-blade mower can occur due to misalignment or improper installation of the blades. It may also result from worn-out or damaged components, such as spindle bearings or the mower deck itself, which can cause the blades to sit unevenly. Additionally, debris buildup can obstruct blade movement, leading to contact between them. Regular maintenance and inspection can help prevent these issues.